CN112413597B - Process for recycling dedusting ash in waste steel processing industry - Google Patents

Process for recycling dedusting ash in waste steel processing industry Download PDF

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CN112413597B
CN112413597B CN202011285839.6A CN202011285839A CN112413597B CN 112413597 B CN112413597 B CN 112413597B CN 202011285839 A CN202011285839 A CN 202011285839A CN 112413597 B CN112413597 B CN 112413597B
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dedusting ash
waste
processing industry
flue gas
enters
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CN112413597A (en
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唐卫军
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Beijing Zhty Technology Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/562—Manufacture of steel by other methods starting from scrap
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/20—Obtaining zinc otherwise than by distilling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/006—Wet processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/02—Working-up flue dust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/46—Recuperation of heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/003—Arrangements of devices for treating smoke or fumes for supplying chemicals to fumes, e.g. using injection devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/30—Technologies for a more efficient combustion or heat usage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
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  • Life Sciences & Earth Sciences (AREA)
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  • Sustainable Development (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention discloses a process for recycling dedusting ash in waste steel processing industry, which comprises the following steps: s1, separating the raw material dust into an oversize part and an undersize part after passing through a conveying and feeding system, wherein the oversize part enters an incineration system, and the undersize part enters a wet separation system; s2, the screened part entering the wet separation system is processed and then divided into a floater, a solid and a liquid, wherein the floater enters the incineration system, the solid is iron ore powder which can be directly recycled, and the liquid enters an ammonia process zinc electrolysis system and then is processed to obtain a zinc ingot; s3, feeding heat generated after the oversize part and the floater enter the incineration system to be incinerated into a waste heat recovery system; and S4, the heat entering the waste heat recovery system is used for producing saturated steam, and the flue gas is discharged after reaching the standard through the flue gas treatment system. The invention aims to provide a process for recycling dedusting ash in the waste steel processing industry, which realizes the optimized utilization of resources and reduces the resource waste.

Description

Process for recycling dedusting ash in waste steel processing industry
Technical Field
The invention relates to the field of solid waste recycling, in particular to a process for recycling dedusting ash in the waste steel processing industry.
Background
In recent years, with the development of economic society, the use amount of waste steel is more and more, and the consumption of waste steel in China is gradually increased. The scrap iron and steel processing industry has been developed at a high rate as an industry closely related to the iron and steel industry, and the solid waste generated in the industry needs to be paid attention. The dust collected by the dust remover in the waste steel processing industry consists of iron oxide, zinc oxide, organic impurities and the like, and is mainly buried at present. The iron content is up to 40-60%, and a part of zinc element and organic impurities are contained, so that the method has a resource utilization value, and if the method is used for landfill, not only can the environment be polluted, but also the resource waste can be caused.
The dust removed in the current steel scrap processing process is mainly buried or is incinerated as garbage, and the recovery of valuable resources such as iron, zinc and the like in the dust removed is not considered. The technical problems mainly solved by the invention comprise: recycling the dedusting ash in the processing process of the scrap steel; separating low boiling point metals such as zinc and the like in the dust from the iron-containing part, so as to facilitate the resource utilization of the iron-containing material; and electrolyzing the zinc to obtain the electrolytic zinc.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a process for recycling the dedusting ash in the waste steel processing industry, so that the optimal utilization of resources is realized, and the waste of resources is reduced.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a process for recycling dedusting ash in waste steel processing industry, which comprises the following steps:
s1, separating the raw material dust into an upper sieve part and a lower sieve part after passing through a conveying and feeding system, wherein the upper sieve part enters an incineration system, and the lower sieve part enters a wet separation system;
s2, the screened part entering the wet separation system is processed and then divided into a floater, a solid and a liquid, wherein the floater enters the incineration system, the solid is iron ore powder which can be directly recycled, and the liquid enters an ammonia process zinc electrolysis system and then is processed to obtain a zinc ingot;
s3, the heat generated after the oversize part and the floater enter the incineration system to be incinerated enters a waste heat recovery system;
and S4, the heat entering the waste heat recovery system is used for producing saturated steam, and the flue gas is discharged after reaching the standard through a flue gas treatment system.
Further, the conveying and feeding system comprises a feeding hopper, a vibrating feeder, a belt weigher and a belt conveyor, and the raw material dedusting ash enters the incineration system through the feeding hopper, the vibrating feeder, the belt weigher and the belt conveyor respectively.
Further, the burning system comprises a rotary kiln, a thermocouple and a secondary combustion chamber.
Furthermore, the burning temperature of the rotary kiln is 850-950 ℃, and the temperature of the secondary combustion chamber is 1100-1200 ℃.
Further, the waste heat recovery system comprises a cyclone dust collector and a waste heat boiler, wherein the inlet temperature is 450-650 ℃, and the outlet temperature is 160-180 ℃; after the flue gas passes through the cyclone dust collector, the dust concentration is reduced by more than 90%, and the pipeline of the waste heat boiler is prevented from being blocked; the flue gas is subjected to heat exchange by a waste heat boiler to obtain saturated steam of 0.4-1.0 MPa.
Further, the flue gas treatment system comprises a dust remover, a dust removal storage bin, a desulfurization device and a denitrification device.
Further, the dust remover is a bag-type dust remover or an electric dust remover; the desulfurization device is realized by spraying sodium bicarbonate micropowder to a flue gas pipeline; the denitration device adopts SCR to realize denitration.
Further, the wet separation system comprises a stirring device and a filtering device
Further, the stirring time of the wet separation system is 0.5-2h, preferably 1h, and the liquid-solid ratio is 6:1, liquid-solid ratio of 5-10:1, preferably 6:1.
further, the ammonia process electrozincing system: purification device, filtering device, electrolytic bath, casting furnace, etc. The purification device adopts a wet ball mill, a zinc block is arranged in the ball mill, and the maximum size of the ball mill is 50mm. The filtering device adopts a plate and frame filter press and a belt filter, preferably a plate and frame filter press.
Compared with the prior art, the invention has the beneficial technical effects that:
the process separates heavy metal with low boiling point from iron-containing materials while recycling the collected dust in the processing process of the scrap steel, and is beneficial to the utilization of the subsequent iron-containing materials in the steel industry. Meanwhile, the separated high-zinc dedusting ash is subjected to ammonia process zinc electrolysis to obtain zinc ingots, and the high-efficiency utilization of resources is realized.
Drawings
The invention is further illustrated in the following description with reference to the drawings.
FIG. 1 is a process flow chart of resource utilization of dedusting ash in the waste iron and steel processing industry.
Detailed Description
As shown in figure 1, the process for recycling the fly ash in the waste steel processing industry comprises the following steps:
s1, separating the raw material dust into an upper sieve part and a lower sieve part after passing through a conveying and feeding system, wherein the upper sieve part enters an incineration system, and the lower sieve part enters a wet separation system;
s2, the screened part entering the wet separation system is processed and then divided into a floater, a solid and a liquid, wherein the floater enters the incineration system, the solid is iron ore powder which can be directly recycled, and the liquid enters an ammonia process zinc electrolysis system and then is processed to obtain a zinc ingot;
s3, the heat generated after the oversize part and the floater enter the incineration system to be incinerated enters a waste heat recovery system;
and S4, the heat entering the waste heat recovery system is used for producing saturated steam, and the flue gas is discharged after reaching the standard through the flue gas treatment system.
In this embodiment: the conveying and feeding system consists of a feeding hopper, a vibrating feeder, a belt scale and a belt conveyor. The materials respectively enter the incineration system through the feeding hopper, the vibrating feeder, the belt weigher and the belt conveyor. The burning system comprises a rotary kiln, a thermocouple and a secondary combustion chamber. The burning temperature of the rotary kiln is 850-950 ℃, and the temperature of the secondary combustion chamber is 1100-1200 ℃. The waste heat recovery system comprises a cyclone dust collector and a waste heat boiler, wherein the inlet temperature is 450-650 ℃, the outlet temperature is 160-180 ℃, the dust concentration of flue gas is reduced by more than 90% after passing through the cyclone dust collector, the pipeline blockage of the waste heat boiler is avoided, and the flue gas obtains 0.4-1.0MPa saturated steam after heat exchange through the waste heat boiler. Flue gas processing system includes dust remover, dust removal ash storage silo, desulphurization unit and denitrification facility, and sack cleaner or electrostatic precipitator are selected for use to the dust remover, preferred sack cleaner, and the fine acupuncture felt of glass is selected to the sack, and the desulfurization adopts the sodium bicarbonate micropowder to spray to flue gas pipeline and realizes, and the denitration adopts SCR. The wet separation system comprises a stirring device and a filtering device. Stirring for 0.5-2h, preferably 1h, and the liquid-solid ratio is 5-10:1, preferably 6:1. the ammonia process electrozincing system comprises a purification device, a filtering device, an electrolytic tank, a casting furnace and the like, wherein the purification device adopts a wet ball mill, zinc blocks are arranged in the purification device, and the maximum size of the zinc blocks is 50mm. The filtering device adopts a plate and frame filter press and a belt filter, preferably a plate and frame filter press.
The first embodiment is as follows:
the waste steel dedusting ash adopts a grab bucket and consists of a conveying and feeding system, an incineration system, a waste heat recovery system, a flue gas treatment system, a wet separation system and an ammonia process zinc electrolysis system. The conveying and feeding system consists of a feeding hopper, a vibrating feeder, a belt scale and a belt conveyor. The materials respectively enter the incineration system through the feeding hopper, the vibrating feeder, the belt weigher and the belt conveyor. The burning system includes rotary kiln with burning temperature of 850-950 deg.c, thermocouple and secondary combustion chamber with burning temperature of 1100-1200 deg.c. The waste heat recovery system comprises a cyclone dust collector and a waste heat boiler, wherein the inlet temperature is 450-650 ℃, and the outlet temperature is 160-180 ℃; after the flue gas passes through the cyclone dust collector, the dust concentration is reduced by more than 90%, and the pipeline of the waste heat boiler is prevented from being blocked; the flue gas is subjected to heat exchange by a waste heat boiler to obtain saturated steam of 0.4-1.0 MPa. The flue gas treatment system comprises a dust remover, a dust removal ash storage bin, a desulfurization device and a denitrification device. The dust remover is a bag-type dust remover or an electric dust remover, preferably a bag-type dust remover, and the bag is preferably a glass fiber needled felt. And the desulfurization is realized by spraying sodium bicarbonate micropowder to a flue gas pipeline. And SCR is adopted for denitration. Wet process separation system, agitating unit, filter equipment. Stirring time is 2h. Liquid-solid ratio 8:1.
example two: the waste steel dedusting ash adopts a grab bucket and consists of a conveying and feeding system, an incineration system, a waste heat recovery system, a flue gas treatment system, a wet separation system and an ammonia process zinc electrolysis system. The conveying and feeding system consists of a feeding hopper, a vibrating feeder, a belt scale and a belt conveyor. The materials respectively enter the incineration system through the feeding hopper, the vibrating feeder, the belt weigher and the belt conveyor. The burning system includes rotary kiln, thermocouple and secondary combustion chamber, and the burning temperature of the rotary kiln is 850-950 deg.c and the temperature of the secondary combustion chamber is 1100-1200 deg.c. The waste heat recovery system comprises a cyclone dust collector and a waste heat boiler, wherein the inlet temperature is 450-650 ℃, and the outlet temperature is 160-180 ℃; after the flue gas passes through the cyclone dust collector, the dust concentration is reduced by more than 90 percent, and the pipeline of the waste heat boiler is prevented from being blocked; the flue gas is subjected to heat exchange by a waste heat boiler to obtain saturated steam of 0.4-1.0 MPa. The flue gas treatment system comprises a dust remover, a fly ash storage bin, a desulfurization device and a denitrification device. The dust remover is a bag-type dust remover or an electric dust remover, preferably a bag-type dust remover, and the bag is preferably a glass fiber needled felt. And the desulfurization is realized by spraying sodium bicarbonate micropowder to a flue gas pipeline. And SCR is adopted for denitration. Wet process separation system, agitating unit, filter equipment. Stirring time is 1h. Liquid-solid ratio 6:1.
the above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims (8)

1. A process for recycling dedusting ash in the waste steel processing industry is characterized by comprising the following steps:
s1, separating the raw material dust into an upper sieve part and a lower sieve part after passing through a conveying and feeding system, wherein the upper sieve part enters an incineration system, and the lower sieve part enters a wet separation system; the stirring time of the wet separation system is 0.5-2h, and the liquid-solid ratio is 5-10:1;
s2, the screened part entering the wet separation system is processed and then divided into a floater, a solid and a liquid, wherein the floater enters the incineration system, the solid is iron ore powder which can be directly recycled, and the liquid enters an ammonia process zinc electrolysis system and then is processed to obtain a zinc ingot; the ammonia process electrozincing system comprises a purifying device, a filtering device, an electrolytic bath and a casting furnace;
s3, the heat generated after the oversize part and the floater enter the incineration system to be incinerated enters a waste heat recovery system;
and S4, the heat entering the waste heat recovery system is used for producing saturated steam, and the flue gas is discharged after reaching the standard through the flue gas treatment system.
2. The process for recycling dedusting ash in the waste steel processing industry as claimed in claim 1, wherein the conveying and feeding system comprises a feeding hopper, a vibrating feeder, a belt scale and a belt conveyor, and the raw dedusting ash enters the incineration system through the feeding hopper, the vibrating feeder, the belt scale and the belt conveyor respectively.
3. The process for recycling dust in the steel and iron scrap processing industry according to claim 1, wherein the incineration system comprises a rotary kiln, a thermocouple and a secondary combustion chamber.
4. The process for recycling dedusting ash in the waste steel and iron processing industry as claimed in claim 3, wherein the burning temperature of the rotary kiln is 850-950 ℃, and the temperature of the secondary combustion chamber is 1100-1200 ℃.
5. The process for recycling dedusting ash in the waste steel processing industry as claimed in claim 1, wherein the waste heat recovery system comprises a cyclone dust collector and a waste heat boiler; after the flue gas passes through the cyclone dust collector, the dust concentration is reduced by more than 90 percent, and the pipeline of the waste heat boiler is prevented from being blocked; the flue gas is subjected to heat exchange by a waste heat boiler to obtain saturated steam of 0.4-1.0 MPa.
6. The process for recycling dedusting ash in the waste steel and iron processing industry as claimed in claim 1, wherein the flue gas treatment system comprises a deduster, a dedusting ash storage bin, a desulfurization device and a denitrification device.
7. The process for recycling dedusting ash in the waste steel processing industry according to claim 6, wherein the deduster is a bag deduster or an electric deduster; the desulfurization device is realized by spraying sodium bicarbonate micropowder to a flue gas pipeline; the denitration device adopts SCR to realize denitration.
8. The process for recycling dedusting ash from waste steel processing industry as claimed in claim 1, wherein the wet separation system comprises a stirring device and a filtering device.
CN202011285839.6A 2020-11-17 2020-11-17 Process for recycling dedusting ash in waste steel processing industry Active CN112413597B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101045947A (en) * 2007-02-28 2007-10-03 李祥兴 Alkali exciting and comprehensively utilizing process of iron-containing furnace dust
CN102329909A (en) * 2011-07-15 2012-01-25 中冶南方工程技术有限公司 Method for extracting iron particles and zinc powder from dust of steel and iron plant
CN103866131A (en) * 2014-03-13 2014-06-18 北京科技大学 Method for recycling blast furnace fly ash containing zinc
CN209039549U (en) * 2018-10-26 2019-06-28 宝钢工程技术集团有限公司 A kind of device that iron content solid wastes recycling containing zinc utilizes
CN111206158A (en) * 2020-03-02 2020-05-29 滦南丰淼环保科技有限公司 Method for recycling blast furnace cloth bag dedusting ash
BE1026928A1 (en) * 2018-12-27 2020-07-23 Hydrometal Hydrometallurgical process for treating dust containing metal oxides from pyrometallurgy
CN111647754A (en) * 2020-06-14 2020-09-11 吴坤 Comprehensive utilization method of zinc-containing dust and sludge in steel plant

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101045947A (en) * 2007-02-28 2007-10-03 李祥兴 Alkali exciting and comprehensively utilizing process of iron-containing furnace dust
CN102329909A (en) * 2011-07-15 2012-01-25 中冶南方工程技术有限公司 Method for extracting iron particles and zinc powder from dust of steel and iron plant
CN103866131A (en) * 2014-03-13 2014-06-18 北京科技大学 Method for recycling blast furnace fly ash containing zinc
CN209039549U (en) * 2018-10-26 2019-06-28 宝钢工程技术集团有限公司 A kind of device that iron content solid wastes recycling containing zinc utilizes
BE1026928A1 (en) * 2018-12-27 2020-07-23 Hydrometal Hydrometallurgical process for treating dust containing metal oxides from pyrometallurgy
CN111206158A (en) * 2020-03-02 2020-05-29 滦南丰淼环保科技有限公司 Method for recycling blast furnace cloth bag dedusting ash
CN111647754A (en) * 2020-06-14 2020-09-11 吴坤 Comprehensive utilization method of zinc-containing dust and sludge in steel plant

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